Indian Oil Corporation [IOC] — Gas Cylinder booked from my father's account and delivered to some one else without his knowledge

My father (K.S. Panwar) is having an Indane gas connection (Consumer no. 12685) through a distributor named "Satyam Gas – Address: S1, Rajguru Complex Opp Mangal City Scheme No. 94, Adarsh Mechanic Nagar, Vijay Nagar, Indore, Madhya Pradesh 452010. On 24th Aug 2020 he got a message that Gas Cylinder has been booked with Ref No.[protected] which my father did not book, and today (25th Aug 2020) he got the message that Cylinder has been delivered with invoice no.[protected]which is obviously not delivered to my father), so that means the distributor/Someone has booked a cylinder from his account and given it to someone else. It is a case of Forgery, please look into it.
Consumer no. 12685 in the name of K.S. Panwar (Karan Singh Panwar)